Choose the Display menu item to view information about
  a specific test's benchmark, result, or difference file
  that you selected in an active view window.

  DTM provides display control boxes to help you
  navigate through displays for interactive terminal
  and DECwindows tests. The control boxes vary, depending
  on the type of file you choose to display.

  No control boxes are necessary for displaying files
  associated with noninteractive tests. Scroll bars
  provided in the display window let you move through
  the selected files.